Decawave Limited

Qorvo US, Inc.

Igor Dotlic

Michael McLaughlin

Jaroslaw Niewczas

Ciaran McElroy

Billy Verso

Gavin Marrow

Marcas O'Duinn

Dries Neirynck

Giuseppe Ruvio

Jeff Clancy

In an ultra-wideband ('UWB') communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency (“PRF”). Methods are also disclosed for transmitting packets discontinuously.

Ultra-wideband communication system

A method for use in a wireless communication system comprising a transmitter and a receiver, the method comprising receiving, in the receiver, data comprising a plurality of channel-distorted synchronization codes and plurality of channel-distorted cipher codes, generating a receiver cipher sequence, the receiver cipher sequence comprising a plurality of receiver cipher codes, analyzing the received data to identify correlations between the plurality of channel-distorted cipher codes in the received data and the plurality of receiver cipher codes, accumulating the identified correlations as accumulator data in an accumulator, identifying one or more peaks in the accumulator data, identifying a first correlation peak in the accumulator data that meets one or more criteria and using the first correlation peak to identify the first path of a data packet from the transmitter.

Secure ultra wide band ranging

An ultra-wideband (UWB) communication system comprising a transmitter having two antennas and a receiver having a single receive antenna. Respective selected portions of the UWB signal are transmitted by the transmitter via each of the two transmit antennas and are received at the receive antenna. By comparing the phases of the received signal portions, the phase difference of departure can be determined. From this phase difference the known distance, d, between the transmit antennas the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

Method and apparatus for determining the angle of departure

A method for use in a wireless communication system comprising a transmitter and a receiver, the method comprising receiving, in the receiver, data comprising a plurality of channel-distorted synchronization codes and plurality of channel-distorted cipher codes, generating a receiver cipher sequence at the receiver, the receiver cipher sequence comprising a plurality of receiver cipher codes, analysing the received data to identify correlations between the plurality of channel-distorted cipher codes in the received data and the plurality of receiver cipher codes, accumulating the identified correlations as accumulator data in an accumulator, identifying one or more peaks in the accumulator data, identifying a first correlation peak in the accumulator data that meets one or more criteria and using the first correlation peak to identify the first path of a data packet from the transmitter.

An ultra-wideband ('UWB') communication system comprising a transmitter and a receiver having two antennas. An UWB signal transmitted by the transmitter is received at each of the antennas. By comparing the carrier phases of the received signals, the phase difference can be determined. From this phase difference and the known distance, d, between the antennas, the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

Method and apparatus for determining location using phase difference of arrival

In an ultra-wideband ('UWB') communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency ('PRF'). Methods are also disclosed for transmitting packets dis-continuously.

An ultra-wideband ('UWB') communication system comprising a transmitter having two transmit antennas and a receiver having a single receive antenna. Respective selected portions of the UWB signal are transmitted by the transmitter via each of transmit antennas is received at the receive antenna. By comparing the phases of the received signal portions, the phase difference of departure can be determined. From this phase difference and the known distance, d, between the transmit antennas, the Cartesian (x,y) location of the transmitter relative to the receiver can be directly determined.

An ultra-wideband ('UWB') communication system comprising a transmitter and a receiver having two antennas. An UWB signal transmitted by the transmitter is received at each of the antennas. By comparing the carrier phases of the received signals, the phase difference can be determined. From this phase difference and the known distance, d, between the antennas, the Cartesian (x,y) location of the transmitter relative to the receiver can be directly determined.

An ultra-wideband ('UWB') communication system comprising a transmitter having two transmit antennas and a receiver having a single receive antenna. Respective selected portions of the UWB signal are transmitted by the transmitter via each of transmit antennas is received at the receive antenna. By comparing the phases of the received signal portions, the phase difference of departure can be determined. From this phase difference and the known distance, d, between the transmit antennas, the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.

An antenna array () for detecting an incoming radio wave () having an operating wavelength, comprising: a plurality of antenna elements () arranged in an array with a periodic repetition of the antenna elements (). Each antenna element () comprises a slot () being shaped such that the polarisation of the corresponding antenna element () is non-linear, and having a first axis (A) and a second axis (A) orthogonal to the first axis. Each of the first and second axes (A; A) has a length in the range of about 0.05-0.2 times the operating wavelength of the incoming radio wave () and the ratio of the length of the first axis Ato the length of the second axis Ais between about 1-2.5. There is also a method of configuring an antenna arrayfor detecting an incoming radio wave (), and a method of determining the angle of arrival of a radio wave () impinging on such an antenna array ().

Wideband antenna array

In an ultra-wideband ('UWB') communication system comprising a pair of UWB transceivers, methods for securely performing channel sounding. In a first GCP Sync method, a pre-determined set of Golay Complementary Pairs is added to an 802.15.4a frame. In a second CLASS method, a cyphered low auto-correlation sum set is added to frame. In a third LCSSS method, a low cross-correlation sidelobe sum set is added to the frame. In general, these methods are adapted to transmit a pseudo-randomly generated codeset which may have inherent sidelobe distortions, and then, in the receiver, to compensate for this, and any channel-induced, distortion by selectively modifing the cross-correlation codeset.

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Dublin, Ireland

Igor Dotlic